ARTIFACTS IN THE TEXT.

[ReneZ]

Also are they in any way correlated to Currier languages A/B? If one "language" contains certain artifacts and the other doesn't, that would possibly be significant.

The one I call "Hand 2" (which doesn't necessarily match Currier designations) was more precise about the placement of the "cap" that sits over the bench char than Hand 1.

What I found most telling is the feature identified in You are not allowed to view links. Register or Login to view. , which has a stand-alone 'c' character under the 'bench'.
This occurs in all possible types of hands and Currier languages.